Leather-working machine.



No. 868,842. v 'PATENTED OCT. 22. 1907. B; B. CHAIN.

LEATHER WORKING MAGHINE.-

APPLICATION FILED DEG-12,1904.

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UNITED STATES. PATENT oFFren.

ELMER E. CHAIN, OF WINTHROP, MASSACHUSETTS, ASSIGNOR TO THE TURNER TANNING MACHINERY COMPANY, OF SOUTH BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

LEATHER-WORKING MACHINE.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed December 12, 1904:. Serial No. 236, 4 .29.

To all whom it may concern:

Be it known that 1, Emma E. CHAIN, of Winthrop, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements 5 in Leather-Working Machines, of which the following is a specification.

This invention has relation to lez'ither-working machinery, such as employed in putting out, striking out, or otherwise treating hides and skins in the manufacture of leather.

In serial table leather working machines, use is made of blades past which the skin or hide is drawn by the table and which operate to spread out and stretch the skin and at the same time remove from the skin the surplus liquid remaining in the pores thereof. These stationary blades, as illustrated in the patent to Chain and Turner, No. 691,306, dated Jan. 14, 1902, are supported upon beds, which are arranged opposite each other with the blades projecting inwardly so as to engage the skin on both faces of the table, as the latter passes between them, the said beds being pressed toward each other by a suitable pressing means such as weights or the like.

Heretoiore it has been customary, in such machines, to provide blades arranged at an angle to each other in V-l'ormation, the apex of the angle formed by the blades being substantially midway between the ends of the bed. The use of blades thus mounted has demonstrated that the skin or hide is apt to be wrinkled or plaited by the action of the blades as the table passes between them, owing to variations in elasticity in different portions of the skin.

When the skin is on the animal, it is irregularly curved, so that when it is stripped therefrom and spread out, it is uneven, and has portions that are more or less bagg These parts of the skin which were around the fore-logs and the hindlegs l'orm tags or ends which must be ilattened out and delivered as free as possible from wrinkles and plaits. In order, therefore, to strike out or put out a skin on a two-faced table, for instance, the bladesshould be so located that certain of them will operate upon the skin from a point back of the shoulders, and near the stripe, toward the ends of those portions of the skin which encircle the hind quarters or hind legs, and the other blades should operate in an angular direction, toward the ends of the lorepart or the portion surround iug the front leg. Since the skin is laid upon the table substantially midway between the ends, the blades heretofore arranged on 50 the machine do not operate to secure the best results,

and consequently, this invention is designed to overcome the diiiiculties met with in said previous n1a chines.

The invention consists, therefore, in a bed or sup port having the blades arranged in V-formation, with the apex of the angles formed by the blade nearer one end of the bed than the other end, so that the blades will be caused to operate on the skin from a point he hind the shoulders instead of from a point midway between the neck and the tail.

On the drawingsz-Figure 1 represents in face view a bed embodying the invention. Fig. 2 represents an edge view thereof.

Referring to the accompanying drawings,a indicates a bed of a machine, such as that illustrated in application Serial No. 236,430, filed December 12, 1904, by me. It is rectangular in plan view, and is provided with a plurality of longitudinal bars 6 I), connected at the ends and at the middle by cross-bars b 11 respectively. Upon the top of the bed thus formed are secured the blades. Each blade consists of a bar 0 of suitable material, such as brass or composition, sup ported by an angle-bar or holder (1, to which it is secured by bolts (7/, the holders being bolted to the bed. These blades are arranged in two series on both sides of a line perpendicular to the longitudinal median line of the bed indicated at (E :0, those to the right thereof being indicated at 3, and those to the left at 4. Some of the blades 3 and 4; are connected by curved portions 5, these blades being therefore continuations of each other. The blades 3 3 and 4 4 are all at acute angles to the line a: x, but the angle formed by said line with the blade 4 is more acute than the angle formed by said line at a: with the blades 3, in order that said blades when against a skin may lieat substantially right angles t0 the lines extending from a point behind the shoulder to the end of the hindquarter, and to the forepart respectively. There is one blade, indicated at 6, which is curved substantially in the arc of a circle whose radius is greater than those of the arcs formed by the curved portions 5 5 of the blades hereinbefore described.

I have not endeavored to illustrate the working edge of the blade, as it may be formed to suit particular re quirements, and may be changed to secure the best results.

I have found, in a machine equipped with a bed having blades as herein illustrated and described, that the skins receive more effective treatment, are laid flatter, and are stretched to a greater extent than skins treated by the machines as heretofore constructed.

Having thus explained the nature of the invention, and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the modes of its use, I declare that what I claim is:

1. The hereindescribed instrumeutality for leat11er-working machines comprising a substantially flat support, blades thereon in Vim-mutton, the blades on one end of the support being at a more acute angle to a line perpendicular to the median line of said support than the blades on the other end thereof.

2. The hereindescribed instrumentality for leather-working machines comprising a substantially flat support, V-formation With their apexes in a line nearer one end of the support than the other, the blades on one side of said line being at an acute angle to said line greater than an angle formed by the other blades.

3. The hereindescribed instrumentality for leather-Working machines comprising a substantially rigid flat support, blades rigidly secured to said support in V-formation, some of the blades on one end of the said support being connected to corresponding blades on the other by curved portions integral therewith, and others being straight substantially as set forth.

In testimony whereof I have afiixed my signature, in presence of two Witnesses.

ELMER E. CHAIN.

Witnesses M. B. MAY, C. C. S'rncnnn. 

